I had to read a little more about the sandbox tree; it could be the tree in the middle of the garden in that Adam story. Even monkeys will avoid it, and some local people call it "Monkey no climb". Tree care has listed it among the 5 most poisonous trees in the world.
This tree is only useful in the hands of those our uncles you don't tell when you are coming home and will not tell them when you are going back.